Python3基礎 delattr 刪除對象的屬性

 

•        Python : 3.7.0
•          OS : Ubuntu 18.04.1 LTS
•         IDE : PyCharm 2018.2.4
•       Conda : 4.5.11
•    typesetting : Markdown

 

code

"""
@Author : 行初心
@Date   : 18-9-23
@Blog   : www.cnblogs.com/xingchuxin
@Gitee  : gitee.com/zhichengjiu
"""


class MyClass:
    # num是類屬性
    num = 1

    def __init__(self, name):
        self.name = name


def main():
    test = MyClass("shemingli")

    # 刪除類屬性
    # 刪除類屬性要寫類名，而不是實例名
    delattr(MyClass, "num")

    # 刪除實例屬性
    delattr(test, "name")

    """
        def delattr(o: Any, name: str)
        Inferred type: (o: Any, name: str) -> None

        Deletes the named attribute from the given object.
        delattr(x, 'y') is equivalent to ``del x.y''
    """
    # 注：如果屬性不存在，就拋出異常


if __name__ == '__main__':
    main()

 

result

/home/coder/anaconda3/envs/py37/bin/python /home/coder/PycharmProjects/oop/demo.py

Process finished with exit code 0

 

resource

• [文檔] docs.python.org/3
• [規范] www.python.org/dev/peps/pep-0008
• [規范] zh-google-styleguide.readthedocs.io/en/latest/google-python-styleguide/python_language_rules
• [源碼] www.python.org/downloads/source
• [ PEP ] www.python.org/dev/peps
• [平台] www.cnblogs.com
• [平台] gitee.com

 

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